[Koha] Upgrade OS - Ubuntu 18.04 to 20.04

[Isabel Pineda]

Hi Mark.

It sounds good that everything worked for you without problems. At least this means that I don't have to expect major difficulties during the upgrade. Anyway, I will have to wait until next year to do the OS upgrade, so there is plenty of time for planification.

Thank you 
Isabel Pineda

-----Mensaje original-----
De: Koha [mailto:koha-bounces at lists.katipo.co.nz] En nombre de Mark Alexander
Enviado el: viernes, 25 de junio de 2021 06:24 p.m.
Para: koha <koha at lists.katipo.co.nz>
Asunto: Re: [Koha] Upgrade OS - Ubuntu 18.04 to 20.04

Excerpts from Alvaro Cornejo's message of 2021-06-25 18:25:51 -0500:
> We also use a VPS provider (Linode) for the koha hosting.
> 
> What we do when migrating to a major version is to create a new VPS, 
> install everything from scratch, move the DB from the old system to 
> the new one, do the DB conversion and test that everything goes as expected.

I also use Linode, but I have done a similar upgrade without creating a second VPS and migrating the database.  Perhaps that's living a bit dangerously, but it worked for me.  I used Linode's backup feature to give me an escape route if something went wrong.  Briefly, here's what I did:

I shutdown the machine completely, and created a manual backup of the entire machine.  After rebooting, I did the upgrade from Debian 8 to Debian 9.  This was done using various apt commands.  I recall that I had to use Linode's out-of-band ssh service instead of normal ssh at one point, because the upgrade brought down Debian's network service briefly.

After the OS upgrade, I made another manual backup of the entire machine.
I also made a backup of the Koha database and configuration, and copied those files to my own laptop.  Finally, I did the Koha upgrade using the usual 'apt install koha-common'.

--
Let's organize this thing and take all
the fun out of it. --Ashleigh Brilliant
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